Feat: optimize error desc (#152)

api/controllers/console/app/__init__.py

@@ -17,6 +17,6 @@ def _get_app(app_id, mode=None):
         raise NotFound("App not found")
 
     if mode and app.mode != mode:
-        raise AppUnavailableError()
+        raise NotFound("The {} app not found".format(mode))
 
     return app

api/controllers/console/app/error.py

@@ -9,31 +9,33 @@ class AppNotFoundError(BaseHTTPException):
 
 class ProviderNotInitializeError(BaseHTTPException):
     error_code = 'provider_not_initialize'
-    description = "Provider Token not initialize."
+    description = "No valid model provider credentials found. " \
+                  "Please go to Settings -> Model Provider to complete your provider credentials."
     code = 400
 
 
 class ProviderQuotaExceededError(BaseHTTPException):
     error_code = 'provider_quota_exceeded'
-    description = "Provider quota exceeded."
+    description = "Your quota for Dify Hosted OpenAI has been exhausted. " \
+                  "Please go to Settings -> Model Provider to complete your own provider credentials."
     code = 400
 
 
 class ProviderModelCurrentlyNotSupportError(BaseHTTPException):
     error_code = 'model_currently_not_support'
-    description = "GPT-4 currently not support."
+    description = "Dify Hosted OpenAI trial currently not support the GPT-4 model."
     code = 400
 
 
 class ConversationCompletedError(BaseHTTPException):
     error_code = 'conversation_completed'
-    description = "Conversation was completed."
+    description = "The conversation has ended. Please start a new conversation."
     code = 400
 
 
 class AppUnavailableError(BaseHTTPException):
     error_code = 'app_unavailable'
-    description = "App unavailable."
+    description = "App unavailable, please check your app configurations."
     code = 400
 
 
@@ -45,5 +47,5 @@ class CompletionRequestError(BaseHTTPException):
 
 class AppMoreLikeThisDisabledError(BaseHTTPException):
     error_code = 'app_more_like_this_disabled'
-    description = "More like this disabled."
+    description = "The 'More like this' feature is disabled. Please refresh your page."
     code = 403